Evaluation of the Theoretical Uncertainties in the W to Lepton and Neutrino Cross Sections at the LHC

Abstract

We study the sources of systematic errors in the measurement of the W to lepton and neutrino cross-sections at the LHC. We consider the systematic errors in both the total cross-section and acceptance for anticipated experimental cuts. We include the best available analysis of QCD effects at NNLO in assessing the effect of higher order corrections and PDF and scale uncertainties on the theoretical acceptance. In addition, we evaluate the error due to missing NLO electroweak corrections and propose which MC generators and computational schemes should be implemented to best simulate the events.

33 pages, 109 eps figures, uses JHEP3.cls, rotating.sty Version 2 corrects an error in Table 1, adds some references, and updates an author address

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• PYTHIA 6.4 Physics and Manual
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• $\mathcal{KK}\text{MC-hh}$: Resummed Exact $\mathcal{O}({\alpha }^{2}L)$ EW Corrections in a Hadronic MC Event Generator
• Theoretical Uncertainties in Electroweak Boson Production Cross Sections at 7, 10, and 14 TeV at the LHC